发明名称 |
A PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM. |
摘要 |
<p>A process for the production of methacrylic acid is described. The process comprises the base catalysed decarboxylation of at least one or a mixture of dicarboxylic acids selected from itaconic, citraconic or mesaconic acid. The decarboxylation is carried out in the range greater than 240 and up to 275°C to provide high selectivity. The methacrylic acid product may be esterified to produce an ester. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters using the process is also described. Optionally, the process may be preceded with a decarboxylation and, if necessary, a dehydration step on a source of pre-acid such as citric acid or isocitric acid.</p> |
申请公布号 |
MX2013005510(A) |
申请公布日期 |
2013.12.16 |
申请号 |
MX20130005510 |
申请日期 |
2011.11.18 |
申请人 |
LUCITE INTERNATIONAL UK LIMITED |
发明人 |
GRAHAM RONALD EASTHAM;MARTYN POLIAKOFF;THOMAS ANDREW HUDDLE;DAVID WILLIAM, JOHNSON |
分类号 |
C07C51/38;C07C57/04;C08L33/06 |
主分类号 |
C07C51/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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